- treat not readable resolv.conf (and other /etc files) as if it was empty, not give out fatal error on it
- so curl-libs -> python-pycurl -> python-urlgrabber could be built on our builders
see http://lists.pld-linux.org/mailman/pipermail/pld-cvs-commit/Week-of-Mon-20100201/265667.html
- rel 2